Union County, NJ Environmental Rules: Erosion Control (2026)

Erosion and sediment control in Union County is administered by the Union County Soil Conservation District (UCSCD) under the NJ Soil Erosion and Sediment Control Act (N.J.S.A. 4:24-39 et seq.). Projects disturbing 5,000 sq ft or more of land require a Certified Plan from UCSCD before construction; the plan must address stabilized construction entrances, perimeter silt fencing, inlet protection, sediment basins (for larger sites), topsoil stockpile management, stabilization timelines (typically 14 days for inactive disturbed areas), and post-construction permanent stabilization. UCSCD engineers review plans and conduct field inspections; non-compliance can trigger stop-work orders and civil penalties. Union County municipalities coordinate with UCSCD during building permit review. Elizabeth, Linden, Plainfield, and Rahway actively enforce given their dense redevelopment activity. Projects disturbing 1 acre or more also trigger NJ DEP MS4 construction activity requirements under the NJPDES Construction General Permit (CGP) plus local municipal stormwater review. Rahway River and Elizabeth River watersheds face heightened scrutiny; the Arthur Kill estuary is a NJDEP-designated Water of Particular Concern. Unlawful sediment discharge to waterways triggers NJ Water Pollution Control Act (N.J.S.A. 58:10A-6) enforcement with substantial penalties. Best Management Practices follow the NJ Soil Erosion and Sediment Control Standards (most recent 2023 edition).